Fix Feature Policy header replication in site-isolation.

content/renderer/render_frame_proxy.cc

Index: content/renderer/render_frame_proxy.cc
diff --git a/content/renderer/render_frame_proxy.cc b/content/renderer/render_frame_proxy.cc
index efae9632dd70c718c1a2d370be5fad761b2f76dd..58b783ad033c1b635f6a36a4456dfbde44a15c1e 100644
--- a/content/renderer/render_frame_proxy.cc
+++ b/content/renderer/render_frame_proxy.cc
@@ -60,6 +60,7 @@ blink::WebParsedFeaturePolicy ToWebParsedFeaturePolicy(
     std::vector<blink::WebSecurityOrigin> web_origins;
     for (const url::Origin& origin : whitelist.origins)
       web_origins.push_back(origin);
+    web_whitelist.origins = web_origins;
     result.push_back(web_whitelist);
   }
   return result;